Enhanced nutrient removal and mechanisms study in benthic fauna added surface-flow constructed wetlands: The role of Tubifex tubifex

Kang, Y; Zhang, J; Xie, H; Guo, Z; Ngo, HH; Guo, W; Liang, S

Enhanced nutrient removal and mechanisms study in benthic fauna added surface-flow constructed wetlands: The role of Tubifex tubifex

Kang, Y Zhang, J Xie, H Guo, Z Ngo, HH

Guo, W

Liang, S

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2017, 224 pp. 157 - 165
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Kang, Y	en_US
dc.contributor.author	Zhang, J	en_US
dc.contributor.author	Xie, H	en_US
dc.contributor.author	Guo, Z	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Liang, S	en_US
dc.date.available	2016-11-07	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2017, 224 pp. 157 - 165	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/78122
dc.description.abstract	© 2016 Elsevier Ltd This study designed a combined benthic fauna-T. orientalis-substrate-microbes surface-flow constructed wetlands (SFCWs) through the addition of T. tubifex. Results showed that, the removal efficiencies of nitrogen and phosphorus in the tested SFCWs achieved 81.14 ± 4.16% and 70.49 ± 7.60%, which were 22.27% and 27.35% higher than that without T. tubifex. Lower nitrate (2.11 ± 0.79 mg/L) and ammonium (0.75 ± 0.64 mg/L) were also observed in the tested SFCWs, which were 3.46 mg/L and 0.52 mg/L lower than that without T. tubifex. Microbial study confirmed the increased denitrifiers with T. tubifex. The lower nitrogen in effluent was also attributed to higher contents of nitrogen storage in sediment and T. orientalis due to the bioturbation of T. tubifex. Furthermore, with T. tubifex, higher proportions of particulate (22.66 ± 3.96%) and colloidal phosphorus (20.57 ± 3.39%) observed promoted phosphorus settlement and further absorption by T. orientalis. The outcomes of this study provides an ecological and economical strategy for improving the performance of SFCWs.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2016.11.035	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Oligochaeta	en_US
dc.subject.mesh	Nitrogen	en_US
dc.subject.mesh	Phosphorus	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Wetlands	en_US
dc.title	Enhanced nutrient removal and mechanisms study in benthic fauna added surface-flow constructed wetlands: The role of Tubifex tubifex	en_US
dc.type	Journal Article
utslib.citation.volume	224	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	224	en_US

Abstract:

© 2016 Elsevier Ltd This study designed a combined benthic fauna-T. orientalis-substrate-microbes surface-flow constructed wetlands (SFCWs) through the addition of T. tubifex. Results showed that, the removal efficiencies of nitrogen and phosphorus in the tested SFCWs achieved 81.14 ± 4.16% and 70.49 ± 7.60%, which were 22.27% and 27.35% higher than that without T. tubifex. Lower nitrate (2.11 ± 0.79 mg/L) and ammonium (0.75 ± 0.64 mg/L) were also observed in the tested SFCWs, which were 3.46 mg/L and 0.52 mg/L lower than that without T. tubifex. Microbial study confirmed the increased denitrifiers with T. tubifex. The lower nitrogen in effluent was also attributed to higher contents of nitrogen storage in sediment and T. orientalis due to the bioturbation of T. tubifex. Furthermore, with T. tubifex, higher proportions of particulate (22.66 ± 3.96%) and colloidal phosphorus (20.57 ± 3.39%) observed promoted phosphorus settlement and further absorption by T. orientalis. The outcomes of this study provides an ecological and economical strategy for improving the performance of SFCWs.

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http://hdl.handle.net/10453/78122